motherboard RAID or 3Ware RAID?

Dear all
Recently I was planing to order a server with RAID 10 protected.I have inquired some providers and get 2 options about RAID.
One is motherboard RAID,it seems to be hardware RAID based on the same motherboard.I guess it will still assume CPU resource.but i am not sure about the actual performance improvement on disk I/O.
the other is 3Ware RAID Card.this usually takes $30-50/m more,and it wont assume CPU,and will enhance disk I/O evidently.
Some of my friends told me motherboard RAID wont really assume CPU.but i still hang on which to choose.

Go for hardware PCI-E RAID. Reason is simple, at the minor extra costs you can ensure that you're not tied down to the motherboard you're using. If your motherboard fails you can swap to another motherboard, if your RAID card is on the motherboard when you swap you need to swap to the exact same board, which may not be as easy to replace as a regularly board without RAID.

It rarely exists unless it explicitly says it has integrated some RAID chip - then look that up and see if it's just a software RAID chip, like most on the cheapo cards as said, aka what @rds100 calls fakeraid.

Serving you the best VPS, Web hosting, dedicated servers and more - Cloud Shards | Query FoundryWe operate the network AS62638 | Available in Syd AU and Dallas, Los Angeles and NYC USA

We recently had one of our provider upgrading from 2 to 4 port 3ware RAID card, the swap was smooth. This proven that in the event that even the RAID controller or motherboard failed, the recovery timeframe will be pretty short.

ExpertVM.com - Singapore Based Low End Provider. Thailand VPS available upon request